nsz Git - libfirm/blob - ir/ir/irio.c

   1 /*
   2  * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   Write textual representation of firm to file.
  23  * @author  Moritz Kroll
  24  * @version $Id$
  25  */
  26 #include "config.h"
  27
  28 #include <string.h>
  29 #include <ctype.h>
  30 #include <stdbool.h>
  31 #include <stdarg.h>
  32
  33 #include "irio.h"
  34
  35 #include "irnode_t.h"
  36 #include "irprog.h"
  37 #include "irgraph_t.h"
  38 #include "irprintf.h"
  39 #include "ircons.h"
  40 #include "irgmod.h"
  41 #include "irflag_t.h"
  42 #include "irgwalk.h"
  43 #include "tv.h"
  44 #include "array.h"
  45 #include "error.h"
  46 #include "typerep.h"
  47 #include "adt/set.h"
  48 #include "adt/obst.h"
  49
  50 #define SYMERROR ((unsigned) ~0)
  51
  52 typedef struct io_env_t
  53 {
  54         int c;                /**< currently read char */
  55         FILE *file;
  56         set *idset;           /**< id_entry set, which maps from file ids to new Firm elements */
  57         int ignoreblocks;
  58         const char *inputname;
  59         int line;
  60         ir_type **fixedtypes;
  61         struct obstack obst;
  62         ir_graph *irg;
  63 } io_env_t;
  64
  65 typedef enum typetag_t
  66 {
  67         tt_align,
  68         tt_allocation,
  69         tt_builtin,
  70         tt_cond_jmp_predicate,
  71         tt_initializer,
  72         tt_iro,
  73         tt_keyword,
  74         tt_mode_sort,
  75         tt_mode_arithmetic,
  76         tt_pin_state,
  77         tt_tpo,
  78         tt_type_state,
  79         tt_volatility,
  80         tt_linkage,
  81         tt_segment,
  82         tt_visibility
  83 } typetag_t;
  84
  85 typedef enum keyword_t
  86 {
  87         kw_constirg,
  88         kw_entity,
  89         kw_irg,
  90         kw_mode,
  91         kw_modes,
  92         kw_type,
  93         kw_typegraph,
  94         kw_program,
  95         kw_segment_type
  96 } keyword_t;
  97
  98 typedef struct symbol_t
  99 {
 100         const char *str;      /**< The name of this symbol. */
 101         typetag_t   typetag;  /**< The type tag of this symbol. */
 102         unsigned    code;     /**< The value of this symbol. */
 103 } symbol_t;
 104
 105 typedef struct id_entry
 106 {
 107         long id;
 108         void *elem;
 109 } id_entry;
 110
 111 /** The symbol table, a set of symbol_t elements. */
 112 static set *symtbl;
 113
 114 /**
 115  * Compare two symbol table entries.
 116  */
 117 static int symbol_cmp(const void *elt, const void *key, size_t size)
 118 {
 119         int res;
 120         const symbol_t *entry = (const symbol_t *) elt;
 121         const symbol_t *keyentry = (const symbol_t *) key;
 122         (void) size;
 123         res = entry->typetag - keyentry->typetag;
 124         if (res) return res;
 125         return strcmp(entry->str, keyentry->str);
 126 }
 127
 128 static int id_cmp(const void *elt, const void *key, size_t size)
 129 {
 130         const id_entry *entry = (const id_entry *) elt;
 131         const id_entry *keyentry = (const id_entry *) key;
 132         (void) size;
 133         return entry->id - keyentry->id;
 134 }
 135
 136 static void __attribute__((format(printf, 2, 3)))
 137 parse_error(io_env_t *env, const char *fmt, ...)
 138 {
 139         va_list ap;
 140         int     line = env->line;
 141
 142         /* workaround read_c "feature" that a '\n' triggers the line++
 143          * instead of the character after the '\n' */
 144         if (env->c == '\n') {
 145                 line--;
 146         }
 147
 148         fprintf(stderr, "%s:%d: error ", env->inputname, line);
 149
 150         va_start(ap, fmt);
 151         vfprintf(stderr, fmt, ap);
 152         va_end(ap);
 153 }
 154
 155 /** Initializes the symbol table. May be called more than once without problems. */
 156 static void symtbl_init(void)
 157 {
 158         symbol_t key;
 159
 160         /* Only initialize once */
 161         if (symtbl != NULL)
 162                 return;
 163
 164         symtbl = new_set(symbol_cmp, 256);
 165
 166 #define INSERT(tt, s, cod)                                       \
 167         key.str = (s);                                               \
 168         key.typetag = (tt);                                          \
 169         key.code = (cod);                                            \
 170         set_insert(symtbl, &key, sizeof(key), firm_fnv_hash_str(s) + tt * 17)
 171
 172 #define INSERTENUM(tt, e) INSERT(tt, #e, e)
 173 #define INSERTKEYWORD(k) INSERT(tt_keyword, #k, kw_##k)
 174
 175         INSERT(tt_tpo, "array", tpo_array);
 176         INSERT(tt_tpo, "class", tpo_class);
 177         INSERT(tt_tpo, "method", tpo_method);
 178         INSERT(tt_tpo, "pointer", tpo_pointer);
 179         INSERT(tt_tpo, "primitive", tpo_primitive);
 180         INSERT(tt_tpo, "struct", tpo_struct);
 181         INSERT(tt_tpo, "union", tpo_union);
 182         INSERT(tt_tpo, "Unknown", tpo_unknown);
 183
 184         INSERT(tt_mode_sort, "auxiliary", irms_auxiliary);
 185         INSERT(tt_mode_sort, "control_flow", irms_control_flow);
 186         INSERT(tt_mode_sort, "memory", irms_memory);
 187         INSERT(tt_mode_sort, "internal_boolean", irms_internal_boolean);
 188         INSERT(tt_mode_sort, "reference", irms_reference);
 189         INSERT(tt_mode_sort, "int_number", irms_int_number);
 190         INSERT(tt_mode_sort, "float_number", irms_float_number);
 191
 192         INSERT(tt_segment, "global", IR_SEGMENT_GLOBAL);
 193         INSERT(tt_segment, "thread_local", IR_SEGMENT_THREAD_LOCAL);
 194         INSERT(tt_segment, "constructors", IR_SEGMENT_CONSTRUCTORS);
 195         INSERT(tt_segment, "destructors", IR_SEGMENT_DESTRUCTORS);
 196
 197         INSERT(tt_linkage, "constant", IR_LINKAGE_CONSTANT);
 198         INSERT(tt_linkage, "weak", IR_LINKAGE_WEAK);
 199         INSERT(tt_linkage, "garbage_collect", IR_LINKAGE_GARBAGE_COLLECT);
 200         INSERT(tt_linkage, "merge", IR_LINKAGE_MERGE);
 201         INSERT(tt_linkage, "hidden_user", IR_LINKAGE_HIDDEN_USER);
 202
 203         INSERT(tt_visibility, "local", ir_visibility_local);
 204         INSERT(tt_visibility, "external", ir_visibility_external);
 205         INSERT(tt_visibility, "default", ir_visibility_default);
 206         INSERT(tt_visibility, "private", ir_visibility_private);
 207
 208         INSERTKEYWORD(constirg);
 209         INSERTKEYWORD(entity);
 210         INSERTKEYWORD(irg);
 211         INSERTKEYWORD(mode);
 212         INSERTKEYWORD(modes);
 213         INSERTKEYWORD(type);
 214         INSERTKEYWORD(typegraph);
 215         INSERTKEYWORD(program);
 216         INSERTKEYWORD(segment_type);
 217
 218 #include "gen_irio_lex.inl"
 219
 220         INSERTENUM(tt_align, align_non_aligned);
 221         INSERTENUM(tt_align, align_is_aligned);
 222
 223         INSERTENUM(tt_builtin, ir_bk_trap);
 224         INSERTENUM(tt_builtin, ir_bk_debugbreak);
 225         INSERTENUM(tt_builtin, ir_bk_return_address);
 226         INSERTENUM(tt_builtin, ir_bk_frame_address);
 227         INSERTENUM(tt_builtin, ir_bk_prefetch);
 228         INSERTENUM(tt_builtin, ir_bk_ffs);
 229         INSERTENUM(tt_builtin, ir_bk_clz);
 230         INSERTENUM(tt_builtin, ir_bk_ctz);
 231         INSERTENUM(tt_builtin, ir_bk_popcount);
 232         INSERTENUM(tt_builtin, ir_bk_parity);
 233         INSERTENUM(tt_builtin, ir_bk_bswap);
 234         INSERTENUM(tt_builtin, ir_bk_inport);
 235         INSERTENUM(tt_builtin, ir_bk_outport);
 236         INSERTENUM(tt_builtin, ir_bk_inner_trampoline);
 237
 238         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_NONE);
 239         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_TRUE);
 240         INSERTENUM(tt_cond_jmp_predicate, COND_JMP_PRED_FALSE);
 241
 242         INSERTENUM(tt_initializer, IR_INITIALIZER_CONST);
 243         INSERTENUM(tt_initializer, IR_INITIALIZER_TARVAL);
 244         INSERTENUM(tt_initializer, IR_INITIALIZER_NULL);
 245         INSERTENUM(tt_initializer, IR_INITIALIZER_COMPOUND);
 246
 247         INSERTENUM(tt_mode_arithmetic, irma_uninitialized);
 248         INSERTENUM(tt_mode_arithmetic, irma_none);
 249         INSERTENUM(tt_mode_arithmetic, irma_twos_complement);
 250         INSERTENUM(tt_mode_arithmetic, irma_ones_complement);
 251         INSERTENUM(tt_mode_arithmetic, irma_int_BCD);
 252         INSERTENUM(tt_mode_arithmetic, irma_ieee754);
 253         INSERTENUM(tt_mode_arithmetic, irma_float_BCD);
 254
 255         INSERTENUM(tt_pin_state, op_pin_state_floats);
 256         INSERTENUM(tt_pin_state, op_pin_state_pinned);
 257         INSERTENUM(tt_pin_state, op_pin_state_exc_pinned);
 258         INSERTENUM(tt_pin_state, op_pin_state_mem_pinned);
 259
 260         INSERTENUM(tt_type_state, layout_undefined);
 261         INSERTENUM(tt_type_state, layout_fixed);
 262
 263         INSERTENUM(tt_volatility, volatility_non_volatile);
 264         INSERTENUM(tt_volatility, volatility_is_volatile);
 265
 266 #undef INSERTKEYWORD
 267 #undef INSERTENUM
 268 #undef INSERT
 269 }
 270
 271 static const char *get_segment_name(ir_segment_t segment)
 272 {
 273         switch (segment) {
 274         case IR_SEGMENT_GLOBAL:       return "global";
 275         case IR_SEGMENT_THREAD_LOCAL: return "thread_local";
 276         case IR_SEGMENT_CONSTRUCTORS: return "constructors";
 277         case IR_SEGMENT_DESTRUCTORS:  return "destructors";
 278         }
 279         return "INVALID_SEGMENT";
 280 }
 281
 282 static const char *get_visibility_name(ir_visibility visibility)
 283 {
 284         switch (visibility) {
 285         case ir_visibility_local:    return "local";
 286         case ir_visibility_external: return "external";
 287         case ir_visibility_default:  return "default";
 288         case ir_visibility_private:  return "private";
 289         }
 290         return "INVALID_VISIBILITY";
 291 }
 292
 293 /** Returns the according symbol value for the given string and tag, or SYMERROR if none was found. */
 294 static unsigned symbol(const char *str, typetag_t typetag)
 295 {
 296         symbol_t key, *entry;
 297
 298         key.str = str;
 299         key.typetag = typetag;
 300
 301         entry = (symbol_t*)set_find(symtbl, &key, sizeof(key), firm_fnv_hash_str(str) + typetag * 17);
 302         return entry ? entry->code : SYMERROR;
 303 }
 304
 305 static void *get_id(io_env_t *env, long id)
 306 {
 307         id_entry key, *entry;
 308         key.id = id;
 309
 310         entry = (id_entry*)set_find(env->idset, &key, sizeof(key), (unsigned) id);
 311         return entry ? entry->elem : NULL;
 312 }
 313
 314 static void set_id(io_env_t *env, long id, void *elem)
 315 {
 316         id_entry key;
 317         key.id = id;
 318         key.elem = elem;
 319         set_insert(env->idset, &key, sizeof(key), (unsigned) id);
 320 }
 321
 322 static void write_long(io_env_t *env, long value)
 323 {
 324         fprintf(env->file, "%ld ", value);
 325 }
 326
 327 static void write_int(io_env_t *env, int value)
 328 {
 329         fprintf(env->file, "%d ", value);
 330 }
 331
 332 static void write_unsigned(io_env_t *env, unsigned value)
 333 {
 334         fprintf(env->file, "%u ", value);
 335 }
 336
 337 static void write_entity_ref(io_env_t *env, ir_entity *entity)
 338 {
 339         write_long(env, get_entity_nr(entity));
 340 }
 341
 342 static void write_type_ref(io_env_t *env, ir_type *type)
 343 {
 344         write_long(env, get_type_nr(type));
 345 }
 346
 347 static void write_string(io_env_t *env, const char *string)
 348 {
 349         const char *c;
 350         fputc('"', env->file);
 351         for (c = string; *c != '\0'; ++c) {
 352                 switch (*c) {
 353                 case '\n':
 354                         fputc('\\', env->file);
 355                         fputc('n', env->file);
 356                         break;
 357                 case '"':
 358                 case '\\':
 359                         fputc('\\', env->file);
 360                         /* FALLTHROUGH */
 361                 default:
 362                         fputc(*c, env->file);
 363                         break;
 364                 }
 365         }
 366         fputc('"', env->file);
 367 }
 368
 369 static void write_ident(io_env_t *env, ident *id)
 370 {
 371         write_string(env, get_id_str(id));
 372         fputc(' ', env->file);
 373 }
 374
 375 static void write_ident_null(io_env_t *env, ident *id)
 376 {
 377         if (id == NULL) {
 378                 fputs("NULL ", env->file);
 379         } else {
 380                 write_ident(env, id);
 381         }
 382 }
 383
 384 static void write_mode(io_env_t *env, ir_mode *mode)
 385 {
 386         fputs(get_mode_name(mode), env->file);
 387         fputc(' ', env->file);
 388 }
 389
 390 static void write_tarval(io_env_t *env, ir_tarval *tv)
 391 {
 392         char buf[1024];
 393         write_mode(env, get_tarval_mode(tv));
 394         tarval_snprintf(buf, sizeof(buf), tv);
 395         fputs(buf, env->file);
 396         fputc(' ', env->file);
 397 }
 398
 399 static void write_align(io_env_t *env, ir_node *irn)
 400 {
 401         ir_align align;
 402
 403         if (is_Load(irn))
 404                 align = get_Load_align(irn);
 405         else if (is_Store(irn))
 406                 align = get_Store_align(irn);
 407         else
 408                 panic("Invalid optype for write_align");
 409
 410         fputs(get_align_name(align), env->file);
 411         fputc(' ', env->file);
 412 }
 413
 414 static void write_builtin_kind(io_env_t *env, ir_node *irn)
 415 {
 416         fputs(get_builtin_kind_name(get_Builtin_kind(irn)), env->file);
 417         fputc(' ', env->file);
 418 }
 419
 420 static void write_cond_jmp_predicate(io_env_t *env, ir_node *irn)
 421 {
 422         fputs(get_cond_jmp_predicate_name(get_Cond_jmp_pred(irn)), env->file);
 423         fputc(' ', env->file);
 424 }
 425
 426 static void write_list_begin(io_env_t *env)
 427 {
 428         fputs("[", env->file);
 429 }
 430
 431 static void write_list_end(io_env_t *env)
 432 {
 433         fputs("] ", env->file);
 434 }
 435
 436 static void write_initializer(io_env_t *env, ir_initializer_t *ini)
 437 {
 438         FILE *f = env->file;
 439         ir_initializer_kind_t ini_kind = get_initializer_kind(ini);
 440
 441         fputs(get_initializer_kind_name(ini_kind), f);
 442         fputc(' ', f);
 443
 444         switch (ini_kind) {
 445         case IR_INITIALIZER_CONST:
 446                 write_long(env, get_irn_node_nr(get_initializer_const_value(ini)));
 447                 break;
 448
 449         case IR_INITIALIZER_TARVAL:
 450                 write_tarval(env, get_initializer_tarval_value(ini));
 451                 break;
 452
 453         case IR_INITIALIZER_NULL:
 454                 break;
 455
 456         case IR_INITIALIZER_COMPOUND: {
 457                 size_t i, n = get_initializer_compound_n_entries(ini);
 458                 ir_fprintf(f, "%zu ", n);
 459                 for (i = 0; i < n; ++i)
 460                         write_initializer(env, get_initializer_compound_value(ini, i));
 461                 break;
 462         }
 463
 464         default:
 465                 panic("Unknown initializer kind");
 466         }
 467 }
 468
 469 static void write_pin_state(io_env_t *env, ir_node *irn)
 470 {
 471         fputs(get_op_pin_state_name(get_irn_pinned(irn)), env->file);
 472         fputc(' ', env->file);
 473 }
 474
 475 static void write_volatility(io_env_t *env, ir_node *irn)
 476 {
 477         ir_volatility vol;
 478
 479         if (is_Load(irn))
 480                 vol = get_Load_volatility(irn);
 481         else if (is_Store(irn))
 482                 vol = get_Store_volatility(irn);
 483         else
 484                 panic("Invalid optype for write_volatility");
 485
 486         fputs(get_volatility_name(vol), env->file);
 487         fputc(' ', env->file);
 488 }
 489
 490 static void export_type_common(io_env_t *env, ir_type *tp)
 491 {
 492         fprintf(env->file, "\ttype %ld %s %u %u %s %u ",
 493                 get_type_nr(tp),
 494                 get_type_tpop_name(tp),
 495                 get_type_size_bytes(tp),
 496                 get_type_alignment_bytes(tp),
 497                 get_type_state_name(get_type_state(tp)),
 498                 tp->flags);
 499 }
 500
 501 static void export_type_pre(io_env_t *env, ir_type *tp)
 502 {
 503         FILE *f = env->file;
 504
 505         /* skip types to be handled by post walker */
 506         switch (get_type_tpop_code(tp)) {
 507         case tpo_array:
 508         case tpo_method:
 509         case tpo_pointer:
 510                 return;
 511         default:
 512                 break;
 513         }
 514
 515         export_type_common(env, tp);
 516
 517         switch (get_type_tpop_code(tp)) {
 518         case tpo_uninitialized:
 519                 panic("invalid type found");
 520
 521         case tpo_class:
 522                 write_ident_null(env, get_compound_ident(tp));
 523                 break;
 524
 525         case tpo_primitive:
 526                 write_mode(env, get_type_mode(tp));
 527                 break;
 528
 529         case tpo_union:
 530         case tpo_struct:
 531         case tpo_enumeration:
 532                 write_ident_null(env, get_compound_ident(tp));
 533                 break;
 534
 535         case tpo_array:
 536         case tpo_method:
 537         case tpo_pointer:
 538         case tpo_code:
 539         case tpo_none:
 540         case tpo_unknown:
 541                 break;
 542         }
 543         fputc('\n', f);
 544 }
 545
 546 static void export_type_post(io_env_t *env, ir_type *tp)
 547 {
 548         FILE *f = env->file;
 549         size_t i;
 550
 551         /* skip types already handled by pre walker */
 552         switch (get_type_tpop_code(tp)) {
 553         case tpo_class:
 554         case tpo_primitive:
 555         case tpo_struct:
 556         case tpo_union:
 557         case tpo_unknown:
 558         case tpo_uninitialized:
 559         case tpo_code:
 560         case tpo_none:
 561                 return;
 562         case tpo_array:
 563         case tpo_method:
 564         case tpo_pointer:
 565         case tpo_enumeration:
 566                 break;
 567         }
 568
 569         export_type_common(env, tp);
 570
 571         switch (get_type_tpop_code(tp)) {
 572         case tpo_array: {
 573                 size_t n = get_array_n_dimensions(tp);
 574                 ir_fprintf(f, "%zu %ld ", n, get_type_nr(get_array_element_type(tp)));
 575                 for (i = 0; i < n; i++) {
 576                         ir_node *lower = get_array_lower_bound(tp, i);
 577                         ir_node *upper = get_array_upper_bound(tp, i);
 578
 579                         if (is_Const(lower))
 580                                 write_long(env, get_tarval_long(get_Const_tarval(lower)));
 581                         else
 582                                 panic("Lower array bound is not constant");
 583
 584                         if (is_Const(upper))
 585                                 write_long(env, get_tarval_long(get_Const_tarval(upper)));
 586                         else if (is_Unknown(upper))
 587                                 fputs("unknown ", f);
 588                         else
 589                                 panic("Upper array bound is not constant");
 590                 }
 591                 break;
 592         }
 593
 594         case tpo_method: {
 595                 size_t nparams  = get_method_n_params(tp);
 596                 size_t nresults = get_method_n_ress(tp);
 597                 ir_fprintf(f, "%u %u %zu %zu ", get_method_calling_convention(tp),
 598                         get_method_additional_properties(tp), nparams, nresults);
 599                 for (i = 0; i < nparams; i++)
 600                         write_long(env, get_type_nr(get_method_param_type(tp, i)));
 601                 for (i = 0; i < nresults; i++)
 602                         write_long(env, get_type_nr(get_method_res_type(tp, i)));
 603                 ir_fprintf(f, "%zu ", get_method_first_variadic_param_index(tp));
 604                 break;
 605         }
 606
 607         case tpo_pointer:
 608                 write_mode(env, get_type_mode(tp));
 609                 write_long(env, get_type_nr(get_pointer_points_to_type(tp)));
 610                 break;
 611
 612         case tpo_enumeration:
 613                 fprintf(stderr, "Enumeration type not handled yet by exporter\n");
 614                 break;
 615
 616         default:
 617                 printf("export_type: Unknown type code \"%s\".\n",
 618                        get_type_tpop_name(tp));
 619                 break;
 620         }
 621         fputc('\n', f);
 622 }
 623
 624 static void export_entity(io_env_t *env, ir_entity *ent)
 625 {
 626         FILE          *file       = env->file;
 627         ir_type       *owner      = get_entity_owner(ent);
 628         ir_visibility  visibility = get_entity_visibility(ent);
 629         ir_linkage     linkage    = get_entity_linkage(ent);
 630
 631         /* we don't dump array_element_ent entities. They're a strange concept
 632          * and lead to cycles in type_graph.
 633          */
 634         if (is_Array_type(owner))
 635                 return;
 636
 637         fprintf(env->file, "\tentity ");
 638         write_long(env, get_entity_nr(ent));
 639         write_ident_null(env, get_entity_ident(ent));
 640         if (!entity_has_ld_ident(ent)) {
 641                 write_ident_null(env, NULL);
 642         } else {
 643                 write_ident_null(env, get_entity_ld_ident(ent));
 644         }
 645
 646         /* visibility + linkage */
 647         if (visibility != ir_visibility_default) {
 648                 fprintf(file, "%s ", get_visibility_name(visibility));
 649         }
 650         if (linkage & IR_LINKAGE_CONSTANT)
 651                 fputs("constant ", file);
 652         if (linkage & IR_LINKAGE_WEAK)
 653                 fputs("weak ", file);
 654         if (linkage & IR_LINKAGE_GARBAGE_COLLECT)
 655                 fputs("garbage_collect ", file);
 656         if (linkage & IR_LINKAGE_MERGE)
 657                 fputs("merge ", file);
 658         if (linkage & IR_LINKAGE_HIDDEN_USER)
 659                 fputs("hidden_user ", file);
 660
 661         fprintf(file, "%ld %ld %d %u %d %s ",
 662                         get_type_nr(get_entity_type(ent)),
 663                         get_type_nr(owner),
 664                         get_entity_offset(ent),
 665                         (unsigned) get_entity_offset_bits_remainder(ent),
 666                         is_entity_compiler_generated(ent),
 667                         get_volatility_name(get_entity_volatility(ent)));
 668
 669         if (ent->initializer != NULL) {
 670                 fputs("initializer ", env->file);
 671                 write_initializer(env, get_entity_initializer(ent));
 672         } else if (entity_has_compound_ent_values(ent)) {
 673                 size_t i, n = get_compound_ent_n_values(ent);
 674                 fputs("compoundgraph ", env->file);
 675                 ir_fprintf(env->file, "%zu ", n);
 676                 for (i = 0; i < n; i++) {
 677                         ir_entity *member = get_compound_ent_value_member(ent, i);
 678                         ir_node   *irn    = get_compound_ent_value(ent, i);
 679                         fprintf(env->file, "%ld %ld ", get_entity_nr(member), get_irn_node_nr(irn));
 680                 }
 681         } else {
 682                 fputs("none", env->file);
 683         }
 684
 685         fputc('\n', env->file);
 686 }
 687
 688 static void export_type_or_ent_pre(type_or_ent tore, void *ctx)
 689 {
 690         io_env_t *env = (io_env_t *) ctx;
 691         if (get_kind(tore.typ) == k_type)
 692                 export_type_pre(env, tore.typ);
 693 }
 694
 695 static void export_type_or_ent_post(type_or_ent tore, void *ctx)
 696 {
 697         io_env_t *env = (io_env_t *) ctx;
 698
 699         switch (get_kind(tore.ent)) {
 700         case k_entity:
 701                 export_entity(env, tore.ent);
 702                 break;
 703
 704         case k_type:
 705                 export_type_post(env, tore.typ);
 706                 break;
 707
 708         default:
 709                 panic("export_type_or_ent_post: Unknown type or entity.");
 710                 break;
 711         }
 712 }
 713
 714 static void export_ASM(io_env_t *env, ir_node *node)
 715 {
 716         ir_asm_constraint *input_constraints    = get_ASM_input_constraints(node);
 717         ir_asm_constraint *output_constraints   = get_ASM_output_constraints(node);
 718         ident            **clobbers             = get_ASM_clobbers(node);
 719         int                n_input_constraints  = get_ASM_n_input_constraints(node);
 720         int                n_output_constraints = get_ASM_n_output_constraints(node);
 721         int                n_clobbers           = get_ASM_n_clobbers(node);
 722         int i;
 723
 724         write_ident(env, get_ASM_text(node));
 725         write_list_begin(env);
 726         for (i = 0; i < n_input_constraints; ++i) {
 727                 const ir_asm_constraint *constraint = &input_constraints[i];
 728                 write_unsigned(env, constraint->pos);
 729                 write_ident(env, constraint->constraint);
 730                 write_mode(env, constraint->mode);
 731         }
 732         write_list_end(env);
 733
 734         write_list_begin(env);
 735         for (i = 0; i < n_output_constraints; ++i) {
 736                 const ir_asm_constraint *constraint = &output_constraints[i];
 737                 write_unsigned(env, constraint->pos);
 738                 write_ident(env, constraint->constraint);
 739                 write_mode(env, constraint->mode);
 740         }
 741         write_list_end(env);
 742
 743         write_list_begin(env);
 744         for (i = 0; i < n_clobbers; ++i) {
 745                 ident *clobber = clobbers[i];
 746                 write_ident(env, clobber);
 747         }
 748         write_list_end(env);
 749 }
 750
 751 /**
 752  * Walker: exports every node.
 753  */
 754 static void export_node(ir_node *irn, void *ctx)
 755 {
 756         io_env_t *env = (io_env_t *) ctx;
 757         int i, n;
 758         unsigned opcode = get_irn_opcode(irn);
 759
 760         if (env->ignoreblocks && opcode == iro_Block)
 761                 return;
 762
 763         fprintf(env->file, "\t%s ", get_irn_opname(irn));
 764         write_long(env, get_irn_node_nr(irn));
 765
 766         write_list_begin(env);
 767         n = get_irn_arity(irn);
 768         if (!is_Block(irn)) {
 769                 ir_node *block = get_nodes_block(irn);
 770                 write_long(env, get_irn_node_nr(block));
 771         }
 772
 773         for (i = 0; i < n; i++) {
 774                 ir_node *pred = get_irn_n(irn, i);
 775                 if (pred == NULL) {
 776                         /* Anchor node may have NULL predecessors */
 777                         assert(is_Anchor(irn));
 778                         fputs("-1 ", env->file);
 779                 } else {
 780                         write_long(env, get_irn_node_nr(pred));
 781                 }
 782         }
 783         write_list_end(env);
 784
 785         fputs("{ ", env->file);
 786
 787         switch (opcode) {
 788         case iro_Start:
 789         case iro_End:
 790         case iro_Block:
 791         case iro_Anchor:
 792                 break;
 793         case iro_SymConst:
 794                 /* TODO: only symconst_addr_ent implemented yet */
 795                 assert(get_SymConst_kind(irn) == symconst_addr_ent);
 796                 fprintf(env->file, "%ld ", get_entity_nr(get_SymConst_entity(irn)));
 797                 break;
 798         case iro_Proj:
 799                 write_mode(env, get_irn_mode(irn));
 800                 fprintf(env->file, "%ld ", get_Proj_proj(irn));
 801                 break;
 802         case iro_ASM:
 803                 export_ASM(env, irn);
 804                 break;
 805 #include "gen_irio_export.inl"
 806         default:
 807                 panic("no export code for node %+F\n", irn);
 808         }
 809         fputs("}\n", env->file);
 810 }
 811
 812 static const char *get_mode_sort_name(ir_mode_sort sort)
 813 {
 814         switch (sort) {
 815         case irms_auxiliary:        return "auxiliary";
 816         case irms_control_flow:     return "control_flow";
 817         case irms_memory:           return "memory";
 818         case irms_internal_boolean: return "internal_boolean";
 819         case irms_reference:        return "reference";
 820         case irms_int_number:       return "int_number";
 821         case irms_float_number:     return "float_number";
 822         }
 823         panic("invalid mode sort found");
 824 }
 825
 826 static void export_modes(io_env_t *env)
 827 {
 828         size_t i, n_modes = get_irp_n_modes();
 829
 830         fputs("modes {\n", env->file);
 831
 832         for (i = 0; i < n_modes; i++) {
 833                 ir_mode *mode = get_irp_mode(i);
 834                 switch (get_mode_sort(mode)) {
 835                 case irms_auxiliary:
 836                 case irms_control_flow:
 837                 case irms_memory:
 838                 case irms_internal_boolean:
 839                         /* skip "internal" modes, which may not be user defined */
 840                         continue;
 841                 default:
 842                         break;
 843                 }
 844
 845                 fprintf(env->file, "\tmode ");
 846                 write_string(env, get_mode_name(mode));
 847                 fprintf(env->file, "%s %u %d %s %u %u ",
 848                         get_mode_sort_name(get_mode_sort(mode)),
 849                         get_mode_size_bits(mode), get_mode_sign(mode),
 850                         get_mode_arithmetic_name(get_mode_arithmetic(mode)),
 851                         get_mode_modulo_shift(mode),
 852                         get_mode_n_vector_elems(mode));
 853                 if (mode_is_reference(mode)) {
 854                         write_mode(env, get_reference_mode_signed_eq(mode));
 855                         write_mode(env, get_reference_mode_unsigned_eq(mode));
 856                 }
 857                 fputc('\n', env->file);
 858         }
 859
 860         fputs("}\n", env->file);
 861 }
 862
 863 static void export_program(io_env_t *env)
 864 {
 865         FILE         *f = env->file;
 866         ir_segment_t  s;
 867
 868         fputs("\nprogram {\n", f);
 869         if (irp_prog_name_is_set()) {
 870                 fprintf(f, "\tname ");
 871                 write_string(env, get_irp_name());
 872                 fputc('\n', f);
 873         }
 874
 875         for (s = IR_SEGMENT_FIRST; s <= IR_SEGMENT_LAST; ++s) {
 876                 ir_type *segment_type = get_segment_type(s);
 877                 fprintf(f, "\tsegment_type %s ", get_segment_name(s));
 878                 if (segment_type == NULL) {
 879                         fputs(" NULL\n", f);
 880                 } else {
 881                         write_long(env, get_type_nr(segment_type));
 882                         fputc('\n', f);
 883                 }
 884         }
 885         fputs("}\n", f);
 886 }
 887
 888 void ir_export(const char *filename)
 889 {
 890         FILE *file = fopen(filename, "wt");
 891         if (file == NULL) {
 892                 perror(filename);
 893                 return;
 894         }
 895
 896         ir_export_file(file, filename);
 897         fclose(file);
 898 }
 899
 900 /* Exports the whole irp to the given file in a textual form. */
 901 void ir_export_file(FILE *file, const char *outputname)
 902 {
 903         io_env_t env;
 904         size_t i, n_irgs = get_irp_n_irgs();
 905
 906         (void) outputname;
 907         env.file = file;
 908
 909         export_modes(&env);
 910
 911         fputs("\ntypegraph {\n", env.file);
 912         type_walk_prog(export_type_or_ent_pre, export_type_or_ent_post, &env);
 913         fputs("}\n", env.file);
 914
 915         for (i = 0; i < n_irgs; i++) {
 916                 ir_graph *irg       = get_irp_irg(i);
 917                 ir_type  *valuetype = get_irg_value_param_type(irg);
 918
 919                 fprintf(env.file, "\nirg %ld %ld %ld {\n",
 920                         get_entity_nr(get_irg_entity(irg)),
 921                         get_type_nr(get_irg_frame_type(irg)),
 922                         valuetype == NULL ? -1 : get_type_nr(valuetype));
 923
 924                 env.ignoreblocks = 0;
 925                 irg_block_walk_graph(irg, NULL, export_node, &env);
 926
 927                 env.ignoreblocks = 1;
 928                 irg_walk_anchors(irg, NULL, export_node, &env);
 929
 930                 fputs("}\n", env.file);
 931         }
 932
 933         fprintf(env.file, "\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 934
 935         walk_const_code(NULL, export_node, &env);
 936         fputs("}\n", env.file);
 937
 938         export_program(&env);
 939 }
 940
 941 /* Exports the given irg to the given file. */
 942 void ir_export_irg(ir_graph *irg, FILE *file, const char *outputname)
 943 {
 944         io_env_t env;
 945
 946         (void) outputname;
 947         env.file = file;
 948
 949         export_modes(&env);
 950
 951         fputs("typegraph {\n", env.file);
 952
 953         type_walk_irg(irg, export_type_or_ent_pre, export_type_or_ent_post, &env);
 954
 955         fprintf(env.file, "}\n\nirg %ld {\n", get_entity_nr(get_irg_entity(irg)));
 956
 957         env.ignoreblocks = 0;
 958         irg_block_walk_graph(irg, NULL, export_node, &env);
 959
 960         env.ignoreblocks = 1;
 961         irg_walk_anchors(irg, NULL, export_node, &env);
 962
 963         /* TODO: Only output needed constants */
 964         fprintf(env.file, "}\n\nconstirg %ld {\n", get_irn_node_nr(get_const_code_irg()->current_block));
 965         walk_const_code(NULL, export_node, &env);
 966         fputs("}\n", env.file);
 967 }
 968
 969 static void read_c(io_env_t *env)
 970 {
 971         int c = fgetc(env->file);
 972         env->c = c;
 973         if (c == '\n')
 974                 env->line++;
 975 }
 976
 977 /** Returns the first non-whitespace character or EOF. **/
 978 static void skip_ws(io_env_t *env)
 979 {
 980         while (true) {
 981                 switch (env->c) {
 982                 case ' ':
 983                 case '\t':
 984                 case '\n':
 985                 case '\r':
 986                         read_c(env);
 987                         continue;
 988
 989                 default:
 990                         return;
 991                 }
 992         }
 993 }
 994
 995 static void skip_to(io_env_t *env, char to_ch)
 996 {
 997         while (env->c != to_ch && env->c != EOF) {
 998                 read_c(env);
 999         }
1000 }
1001
1002 static int expect_char(io_env_t *env, char ch)
1003 {
1004         skip_ws(env);
1005         if (env->c != ch) {
1006                 parse_error(env, "Unexpected char '%c', expected '%c'\n",
1007                             env->c, ch);
1008                 return 0;
1009         }
1010         read_c(env);
1011         return 1;
1012 }
1013
1014 #define EXPECT(c) if (expect_char(env, (c))) {} else return 0
1015
1016 static char *read_word(io_env_t *env)
1017 {
1018         skip_ws(env);
1019
1020         assert(obstack_object_size(&env->obst) == 0);
1021         while (true) {
1022                 int c = env->c;
1023                 switch (c) {
1024                 case EOF:
1025                 case ' ':
1026                 case '\t':
1027                 case '\n':
1028                 case '\r':
1029                         goto endofword;
1030
1031                 default:
1032                         obstack_1grow(&env->obst, c);
1033                         break;
1034                 }
1035                 read_c(env);
1036         }
1037
1038 endofword:
1039         obstack_1grow(&env->obst, '\0');
1040         return (char*)obstack_finish(&env->obst);
1041 }
1042
1043 static char *read_string(io_env_t *env)
1044 {
1045         skip_ws(env);
1046         if (env->c != '"') {
1047                 parse_error(env, "Expected string, got '%c'\n", env->c);
1048                 exit(1);
1049         }
1050         read_c(env);
1051
1052         assert(obstack_object_size(&env->obst) == 0);
1053         while (env->c != '"') {
1054                 if (env->c == EOF) {
1055                         parse_error(env, "Unexpected EOF while parsing string\n");
1056                         exit(1);
1057                 }
1058
1059                 if (env->c == '\\') {
1060                         read_c(env);
1061                         switch (env->c) {
1062                         case 'n':
1063                                 obstack_1grow(&env->obst, '\n');
1064                                 break;
1065                         case '"':
1066                         case '\\':
1067                                 obstack_1grow(&env->obst, env->c);
1068                                 break;
1069                         default:
1070                                 parse_error(env, "Unknown escape sequence '\\%c'\n", env->c);
1071                                 exit(1);
1072                                 break;
1073                         }
1074                 } else {
1075                         obstack_1grow(&env->obst, env->c);
1076                 }
1077                 read_c(env);
1078         }
1079         read_c(env);
1080         obstack_1grow(&env->obst, 0);
1081
1082         return (char*)obstack_finish(&env->obst);
1083 }
1084
1085 static ident *read_ident(io_env_t *env)
1086 {
1087         char  *str = read_string(env);
1088         ident *res = new_id_from_str(str);
1089         obstack_free(&env->obst, str);
1090         return res;
1091 }
1092
1093 /*
1094  * reads a "quoted string" or alternatively the token NULL
1095  */
1096 static char *read_string_null(io_env_t *env)
1097 {
1098         skip_ws(env);
1099         if (env->c == 'N') {
1100                 char *str = read_word(env);
1101                 if (strcmp(str, "NULL") == 0) {
1102                         obstack_free(&env->obst, str);
1103                         return NULL;
1104                 }
1105         } else if (env->c == '"') {
1106                 return read_string(env);
1107         }
1108
1109         parse_error(env, "Expected \"string\" or NULL\n");
1110         exit(1);
1111 }
1112
1113 static ident *read_ident_null(io_env_t *env)
1114 {
1115         ident *res;
1116         char  *str = read_string_null(env);
1117         if (str == NULL)
1118                 return NULL;
1119
1120         res = new_id_from_str(str);
1121         obstack_free(&env->obst, str);
1122         return res;
1123 }
1124
1125 static long read_long(io_env_t *env)
1126 {
1127         long  result;
1128         char *str;
1129
1130         skip_ws(env);
1131         if (!isdigit(env->c) && env->c != '-') {
1132                 parse_error(env, "Expected number, got '%c'\n", env->c);
1133                 exit(1);
1134         }
1135
1136         assert(obstack_object_size(&env->obst) == 0);
1137         do {
1138                 obstack_1grow(&env->obst, env->c);
1139                 read_c(env);
1140         } while (isdigit(env->c));
1141         obstack_1grow(&env->obst, 0);
1142
1143         str = (char*)obstack_finish(&env->obst);
1144         result = atol(str);
1145         obstack_free(&env->obst, str);
1146
1147         return result;
1148 }
1149
1150 static int read_int(io_env_t *env)
1151 {
1152         return (int) read_long(env);
1153 }
1154
1155 static unsigned read_unsigned(io_env_t *env)
1156 {
1157         return (unsigned) read_long(env);
1158 }
1159
1160 static size_t read_size_t(io_env_t *env)
1161 {
1162         /* FIXME */
1163         return (size_t) read_unsigned(env);
1164 }
1165
1166 static void expect_list_begin(io_env_t *env)
1167 {
1168         skip_ws(env);
1169         if (env->c != '[') {
1170                 parse_error(env, "Expected list, got '%c'\n", env->c);
1171                 exit(1);
1172         }
1173         read_c(env);
1174 }
1175
1176 static bool list_has_next(io_env_t *env)
1177 {
1178         if (feof(env->file)) {
1179                 parse_error(env, "Unexpected EOF while reading list");
1180                 exit(1);
1181         }
1182         skip_ws(env);
1183         if (env->c == ']') {
1184                 read_c(env);
1185                 return false;
1186         }
1187
1188         return true;
1189 }
1190
1191 static ir_node *get_node_or_null(io_env_t *env, long nodenr)
1192 {
1193         ir_node *node = (ir_node *) get_id(env, nodenr);
1194         if (node && node->kind != k_ir_node) {
1195                 panic("Irn ID %ld collides with something else in line %d\n",
1196                       nodenr, env->line);
1197         }
1198         return node;
1199 }
1200
1201 static ir_node *get_node_or_dummy(io_env_t *env, long nodenr)
1202 {
1203         ir_node *node = get_node_or_null(env, nodenr);
1204         if (node == NULL) {
1205                 node = new_r_Dummy(env->irg, mode_X);
1206                 set_id(env, nodenr, node);
1207         }
1208         return node;
1209 }
1210
1211 static ir_type *get_type(io_env_t *env, long typenr)
1212 {
1213         ir_type *type = (ir_type *) get_id(env, typenr);
1214         if (type == NULL)
1215                 panic("unknown type: %ld in line %d\n", typenr, env->line);
1216         else if (type->kind != k_type)
1217                 panic("type ID %ld collides with something else in line %d\n",
1218                       typenr, env->line);
1219         return type;
1220 }
1221
1222 static ir_type *read_type(io_env_t *env)
1223 {
1224         return get_type(env, read_long(env));
1225 }
1226
1227 static ir_entity *get_entity(io_env_t *env, long entnr)
1228 {
1229         ir_entity *entity = (ir_entity *) get_id(env, entnr);
1230         if (entity == NULL) {
1231                 parse_error(env, "unknown entity: %ld\n", entnr);
1232                 exit(1);
1233         } else if (entity->kind != k_entity) {
1234                 panic("Entity ID %ld collides with something else in line %d\n",
1235                       entnr, env->line);
1236         }
1237
1238         return entity;
1239 }
1240
1241 static ir_entity *read_entity(io_env_t *env)
1242 {
1243         return get_entity(env, read_long(env));
1244 }
1245
1246 static ir_mode *read_mode(io_env_t *env)
1247 {
1248         char *str = read_word(env);
1249         size_t i, n;
1250
1251         n = get_irp_n_modes();
1252         for (i = 0; i < n; i++) {
1253                 ir_mode *mode = get_irp_mode(i);
1254                 if (strcmp(str, get_mode_name(mode)) == 0) {
1255                         obstack_free(&env->obst, str);
1256                         return mode;
1257                 }
1258         }
1259
1260         parse_error(env, "unknown mode \"%s\"\n", str);
1261         exit(1);
1262 }
1263
1264 static const char *get_typetag_name(typetag_t typetag)
1265 {
1266         switch (typetag) {
1267         case tt_align:              return "align";
1268         case tt_allocation:         return "allocation";
1269         case tt_builtin:            return "builtin kind";
1270         case tt_cond_jmp_predicate: return "cond_jmp_predicate";
1271         case tt_initializer:        return "initializer kind";
1272         case tt_iro:                return "opcode";
1273         case tt_keyword:            return "keyword";
1274         case tt_linkage:            return "linkage";
1275         case tt_mode_arithmetic:    return "mode_arithmetic";
1276         case tt_mode_sort:          return "mode_sort";
1277         case tt_pin_state:          return "pin state";
1278         case tt_segment:            return "segment";
1279         case tt_tpo:                return "type";
1280         case tt_type_state:         return "type state";
1281         case tt_volatility:         return "volatility";
1282         case tt_visibility:         return "visibility";
1283         }
1284         return "<UNKNOWN>";
1285 }
1286
1287 /**
1288  * Read and decode an enum constant.
1289  */
1290 static unsigned read_enum(io_env_t *env, typetag_t typetag)
1291 {
1292         char     *str  = read_word(env);
1293         unsigned  code = symbol(str, typetag);
1294
1295         if (code != SYMERROR) {
1296                 obstack_free(&env->obst, str);
1297                 return code;
1298         }
1299
1300         parse_error(env, "invalid %s: \"%s\"\n", get_typetag_name(typetag), str);
1301         return 0;
1302 }
1303
1304 #define read_align(env)              ((ir_align)              read_enum(env, tt_align))
1305 #define read_allocation(env)         ((ir_allocation)         read_enum(env, tt_allocation))
1306 #define read_builtin_kind(env)       ((ir_builtin_kind)       read_enum(env, tt_builtin))
1307 #define read_cond_jmp_predicate(env) ((cond_jmp_predicate)    read_enum(env, tt_cond_jmp_predicate))
1308 #define read_initializer_kind(env)   ((ir_initializer_kind_t) read_enum(env, tt_initializer))
1309 #define read_mode_arithmetic(env)    ((ir_mode_arithmetic)    read_enum(env, tt_mode_arithmetic))
1310 #define read_peculiarity(env)        ((ir_peculiarity)        read_enum(env, tt_peculiarity))
1311 #define read_pin_state(env)          ((op_pin_state)          read_enum(env, tt_pin_state))
1312 #define read_type_state(env)         ((ir_type_state)         read_enum(env, tt_type_state))
1313 #define read_variability(env)        ((ir_variability)        read_enum(env, tt_variability))
1314 #define read_volatility(env)         ((ir_volatility)         read_enum(env, tt_volatility))
1315
1316 static ir_cons_flags get_cons_flags(io_env_t *env)
1317 {
1318         ir_cons_flags flags = cons_none;
1319
1320         op_pin_state pinstate = read_pin_state(env);
1321         switch (pinstate) {
1322         case op_pin_state_floats: flags |= cons_floats; break;
1323         case op_pin_state_pinned: break;
1324         default:
1325                 panic("Error in %d: Invalid pinstate: %s", env->line,
1326                       get_op_pin_state_name(pinstate));
1327         }
1328
1329         if (read_volatility(env) == volatility_is_volatile)
1330                 flags |= cons_volatile;
1331         if (read_align(env) == align_non_aligned)
1332                 flags |= cons_unaligned;
1333
1334         return flags;
1335 }
1336
1337 static ir_tarval *read_tv(io_env_t *env)
1338 {
1339         ir_mode   *tvmode = read_mode(env);
1340         char      *str    = read_word(env);
1341         ir_tarval *tv     = new_tarval_from_str(str, strlen(str), tvmode);
1342         obstack_free(&env->obst, str);
1343
1344         return tv;
1345 }
1346
1347 static ir_initializer_t *read_initializer(io_env_t *env)
1348 {
1349         ir_initializer_kind_t ini_kind = read_initializer_kind(env);
1350
1351         switch (ini_kind) {
1352         case IR_INITIALIZER_CONST: {
1353                 ir_node *irn = get_node_or_dummy(env, read_long(env));
1354                 return create_initializer_const(irn);
1355         }
1356
1357         case IR_INITIALIZER_TARVAL:
1358                 return create_initializer_tarval(read_tv(env));
1359
1360         case IR_INITIALIZER_NULL:
1361                 return get_initializer_null();
1362
1363         case IR_INITIALIZER_COMPOUND: {
1364                 size_t i, n = read_size_t(env);
1365                 ir_initializer_t *ini = create_initializer_compound(n);
1366                 for (i = 0; i < n; i++) {
1367                         ir_initializer_t *curini = read_initializer(env);
1368                         set_initializer_compound_value(ini, i, curini);
1369                 }
1370                 return ini;
1371         }
1372
1373         default:
1374                 panic("Unknown initializer kind");
1375         }
1376 }
1377
1378
1379 /** Reads a type description and remembers it by its id. */
1380 static void import_type(io_env_t *env)
1381 {
1382         int            i;
1383         ir_type       *type;
1384         long           typenr = read_long(env);
1385         tp_opcode      tpop   = (tp_opcode) read_enum(env, tt_tpo);
1386         unsigned       size   = (unsigned) read_long(env);
1387         unsigned       align  = (unsigned) read_long(env);
1388         ir_type_state  state  = read_type_state(env);
1389         unsigned       flags  = (unsigned) read_long(env);
1390
1391         switch (tpop) {
1392         case tpo_array: {
1393                 int ndims = (int) read_long(env);
1394                 long elemtypenr = read_long(env);
1395                 ir_type *elemtype = get_type(env, elemtypenr);
1396
1397                 type = new_type_array(ndims, elemtype);
1398                 for (i = 0; i < ndims; i++) {
1399                         char *str = read_word(env);
1400                         if (strcmp(str, "unknown") != 0) {
1401                                 long lowerbound = atol(str);
1402                                 set_array_lower_bound_int(type, i, lowerbound);
1403                         }
1404                         obstack_free(&env->obst, str);
1405
1406                         str = read_word(env);
1407                         if (strcmp(str, "unknown") != 0) {
1408                                 long upperbound = atol(str);
1409                                 set_array_upper_bound_int(type, i, upperbound);
1410                         }
1411                         obstack_free(&env->obst, str);
1412                 }
1413                 set_type_size_bytes(type, size);
1414                 break;
1415         }
1416
1417         case tpo_class: {
1418                 ident *id = read_ident_null(env);
1419
1420                 if (typenr == (long) IR_SEGMENT_GLOBAL)
1421                         type = get_glob_type();
1422                 else
1423                         type = new_type_class(id);
1424                 set_type_size_bytes(type, size);
1425                 break;
1426         }
1427
1428         case tpo_method: {
1429                 unsigned                  callingconv = (unsigned) read_long(env);
1430                 mtp_additional_properties addprops    = (mtp_additional_properties) read_long(env);
1431                 int nparams          = (int)      read_long(env);
1432                 int nresults         = (int)      read_long(env);
1433                 int variaindex;
1434
1435                 type = new_type_method(nparams, nresults);
1436
1437                 for (i = 0; i < nparams; i++) {
1438                         long     typenr = read_long(env);
1439                         ir_type *paramtype = get_type(env, typenr);
1440
1441                         set_method_param_type(type, i, paramtype);
1442                 }
1443                 for (i = 0; i < nresults; i++) {
1444                         long typenr = read_long(env);
1445                         ir_type *restype = get_type(env, typenr);
1446
1447                         set_method_res_type(type, i, restype);
1448                 }
1449
1450                 variaindex = (int) read_long(env);
1451                 if (variaindex != -1) {
1452                         set_method_variadicity(type, variadicity_variadic);
1453                         if (variaindex != nparams)
1454                                 set_method_first_variadic_param_index(type, variaindex);
1455                 }
1456
1457                 set_method_calling_convention(type, callingconv);
1458                 set_method_additional_properties(type, addprops);
1459                 break;
1460         }
1461
1462         case tpo_pointer: {
1463                 ir_mode *mode     = read_mode(env);
1464                 ir_type *pointsto = get_type(env, read_long(env));
1465                 type = new_type_pointer(pointsto);
1466                 set_type_mode(type, mode);
1467                 break;
1468         }
1469
1470         case tpo_primitive: {
1471                 ir_mode *mode = read_mode(env);
1472                 type = new_type_primitive(mode);
1473                 break;
1474         }
1475
1476         case tpo_struct: {
1477                 ident *id = read_ident_null(env);
1478                 type = new_type_struct(id);
1479                 set_type_size_bytes(type, size);
1480                 break;
1481         }
1482
1483         case tpo_union: {
1484                 ident *id = read_ident_null(env);
1485                 type = new_type_union(id);
1486                 set_type_size_bytes(type, size);
1487                 break;
1488         }
1489
1490         case tpo_unknown:
1491                 return;   /* ignore unknown type */
1492
1493         default:
1494                 parse_error(env, "unknown type kind: \"%d\"\n", tpop);
1495                 skip_to(env, '\n');
1496                 return;
1497         }
1498
1499         set_type_alignment_bytes(type, align);
1500         type->flags = flags;
1501
1502         if (state == layout_fixed)
1503                 ARR_APP1(ir_type *, env->fixedtypes, type);
1504
1505         set_id(env, typenr, type);
1506 }
1507
1508 /** Reads an entity description and remembers it by its id. */
1509 static void import_entity(io_env_t *env)
1510 {
1511         long           entnr      = read_long(env);
1512         ident         *name       = read_ident(env);
1513         ident         *ld_name    = read_ident_null(env);
1514         ir_visibility  visibility = ir_visibility_default;
1515         ir_linkage     linkage    = IR_LINKAGE_DEFAULT;
1516         long           typenr;
1517         long           ownertypenr;
1518         const char    *str;
1519         ir_type       *type;
1520         ir_type       *ownertype;
1521         ir_entity     *entity;
1522
1523         skip_ws(env);
1524         while (!isdigit(env->c)) {
1525                 char     *str = read_word(env);
1526                 unsigned  v;
1527
1528                 skip_ws(env);
1529
1530                 v = symbol(str, tt_visibility);
1531                 if (v != SYMERROR) {
1532                         visibility = (ir_visibility)v;
1533                         continue;
1534                 }
1535                 v = symbol(str, tt_linkage);
1536                 if (v != SYMERROR) {
1537                         linkage |= (ir_linkage)v;
1538                         continue;
1539                 }
1540                 printf("Parser error, expected visibility or linkage, got '%s'\n",
1541                        str);
1542                 break;
1543         }
1544
1545         typenr      = read_long(env);
1546         ownertypenr = read_long(env);
1547
1548         type      = get_type(env, typenr);
1549         ownertype = !ownertypenr ? get_glob_type() : get_type(env, ownertypenr);
1550         entity    = new_entity(ownertype, name, type);
1551
1552         if (ld_name != NULL)
1553                 set_entity_ld_ident(entity, ld_name);
1554         set_entity_offset(entity, (int) read_long(env));
1555         set_entity_offset_bits_remainder(entity, (unsigned char) read_long(env));
1556         set_entity_compiler_generated(entity, (int) read_long(env));
1557         set_entity_volatility(entity, read_volatility(env));
1558         set_entity_visibility(entity, visibility);
1559         set_entity_linkage(entity, linkage);
1560
1561         str = read_word(env);
1562         if (strcmp(str, "initializer") == 0) {
1563                 set_entity_initializer(entity, read_initializer(env));
1564         } else if (strcmp(str, "compoundgraph") == 0) {
1565                 int n = (int) read_long(env);
1566                 int i;
1567                 for (i = 0; i < n; i++) {
1568                         ir_entity *member = get_entity(env, read_long(env));
1569                         ir_node   *irn    = get_node_or_dummy(env, read_long(env));
1570                         add_compound_ent_value(entity, irn, member);
1571                 }
1572         } else if (strcmp(str, "none") == 0) {
1573                 /* do nothing */
1574         } else {
1575                 parse_error(env, "expected 'initializer', 'compoundgraph' or 'none' got '%s'\n", str);
1576                 exit(1);
1577         }
1578
1579         set_id(env, entnr, entity);
1580 }
1581
1582 /** Parses the whole type graph. */
1583 static int parse_typegraph(io_env_t *env)
1584 {
1585         ir_graph *old_irg = env->irg;
1586         keyword_t kwkind;
1587
1588         EXPECT('{');
1589
1590         env->irg = get_const_code_irg();
1591
1592         /* parse all types first */
1593         while (true) {
1594                 skip_ws(env);
1595                 if (env->c == '}') {
1596                         read_c(env);
1597                         break;
1598                 }
1599
1600                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1601                 switch (kwkind) {
1602                 case kw_type:
1603                         import_type(env);
1604                         break;
1605
1606                 case kw_entity:
1607                         import_entity(env);
1608                         break;
1609
1610                 default:
1611                         parse_error(env, "type graph element not supported yet: %d\n", kwkind);
1612                         skip_to(env, '\n');
1613                         break;
1614                 }
1615         }
1616         env->irg = old_irg;
1617         return 1;
1618 }
1619
1620 static int read_node_header(io_env_t *env, long *nodenr, ir_node ***preds,
1621                             const char **nodename)
1622 {
1623         int numpreds;
1624
1625         *nodename = read_word(env);
1626         *nodenr   = read_long(env);
1627
1628         ARR_RESIZE(ir_node*, *preds, 0);
1629
1630         expect_list_begin(env);
1631         for (numpreds = 0; list_has_next(env); numpreds++) {
1632                 long     val  = read_long(env);
1633                 ir_node *pred = get_node_or_dummy(env, val);
1634                 ARR_APP1(ir_node*, *preds, pred);
1635         }
1636
1637         return numpreds;
1638 }
1639
1640 static ir_node *read_ASM(io_env_t *env, int numpreds, ir_node **preds)
1641 {
1642         ir_node *newnode;
1643         ir_asm_constraint *input_constraints  = NEW_ARR_F(ir_asm_constraint, 0);
1644         ir_asm_constraint *output_constraints = NEW_ARR_F(ir_asm_constraint, 0);
1645         ident            **clobbers           = NEW_ARR_F(ident*, 0);
1646
1647         ident *asm_text = read_ident(env);
1648
1649         expect_list_begin(env);
1650         while (list_has_next(env)) {
1651                 ir_asm_constraint constraint;
1652                 constraint.pos        = read_unsigned(env);
1653                 constraint.constraint = read_ident(env);
1654                 constraint.mode       = read_mode(env);
1655                 ARR_APP1(ir_asm_constraint, input_constraints, constraint);
1656         }
1657
1658         expect_list_begin(env);
1659         while (list_has_next(env)) {
1660                 ir_asm_constraint constraint;
1661                 constraint.pos        = read_unsigned(env);
1662                 constraint.constraint = read_ident(env);
1663                 constraint.mode       = read_mode(env);
1664                 ARR_APP1(ir_asm_constraint, output_constraints, constraint);
1665         }
1666
1667         expect_list_begin(env);
1668         while (list_has_next(env)) {
1669                 ident *clobber = read_ident(env);
1670                 ARR_APP1(ident*, clobbers, clobber);
1671         }
1672
1673         assert(ARR_LEN(input_constraints) == (size_t)numpreds-1);
1674
1675         newnode = new_r_ASM(preds[0], numpreds-1, preds+1,
1676                         input_constraints,
1677                         ARR_LEN(output_constraints),
1678                         output_constraints,
1679                         ARR_LEN(clobbers),
1680                         clobbers,
1681                         asm_text);
1682         DEL_ARR_F(clobbers);
1683         DEL_ARR_F(output_constraints);
1684         DEL_ARR_F(input_constraints);
1685         return newnode;
1686 }
1687
1688 /** Parses an IRG. */
1689 static int parse_graph(io_env_t *env, ir_graph *irg)
1690 {
1691         ir_node   **preds = NEW_ARR_F(ir_node*,0);
1692         int         i, numpreds, ret = 1;
1693         long        nodenr;
1694         const char *nodename;
1695         ir_node    *node, *newnode;
1696
1697         env->irg = irg;
1698
1699         EXPECT('{');
1700
1701         while (true) {
1702                 skip_ws(env);
1703                 if (env->c == '}') {
1704                         read_c(env);
1705                         break;
1706                 }
1707
1708                 numpreds = read_node_header(env, &nodenr, &preds, &nodename);
1709
1710                 node = get_node_or_null(env, nodenr);
1711                 newnode = NULL;
1712
1713                 EXPECT('{');
1714
1715                 switch (symbol(nodename, tt_iro)) {
1716                 case iro_End: {
1717                         ir_node *newendblock = preds[0];
1718                         newnode = get_irg_end(irg);
1719                         exchange(get_nodes_block(newnode), newendblock);
1720                         for (i = 1; i < numpreds; i++)
1721                                 add_irn_n(newnode, preds[i]);
1722                         break;
1723                 }
1724
1725                 case iro_Start: {
1726                         ir_node *newstartblock = preds[0];
1727                         newnode = get_irg_start(irg);
1728                         exchange(get_nodes_block(newnode), newstartblock);
1729                         break;
1730                 }
1731
1732                 case iro_Block:
1733                         newnode = new_r_Block(irg, numpreds, preds);
1734                         break;
1735
1736                 case iro_Anchor:
1737                         newnode = irg->anchor;
1738                         for (i = 1; i < numpreds; i++)
1739                                 set_irn_n(newnode, i-1, preds[i]);
1740                         set_nodes_block(newnode, preds[0]);
1741                         break;
1742
1743                 case iro_SymConst: {
1744                         long entnr = read_long(env);
1745                         union symconst_symbol sym;
1746                         sym.entity_p = get_entity(env, entnr);
1747                         newnode = new_r_SymConst(irg, mode_P, sym, symconst_addr_ent);
1748                         break;
1749                 }
1750
1751                 case iro_Proj: {
1752                         ir_mode *mode = read_mode(env);
1753                         long     pn   = read_long(env);
1754                         newnode = new_r_Proj(preds[1], mode, pn);
1755                         /* explicitely set block, since preds[1] might be a dummy node
1756                          * which is always in the startblock */
1757                         set_nodes_block(newnode, preds[0]);
1758                         break;
1759                 }
1760
1761                 case iro_ASM:
1762                         newnode = read_ASM(env, numpreds, preds);
1763                         break;
1764
1765                 #include "gen_irio_import.inl"
1766
1767                 default:
1768                         goto notsupported;
1769                 }
1770
1771                 EXPECT('}');
1772
1773                 if (!newnode) {
1774 notsupported:
1775                         parse_error(env, "node type not supported yet: %s\n", nodename);
1776                         abort();
1777                 }
1778
1779                 if (node)
1780                         exchange(node, newnode);
1781                 /* Always update hash entry to avoid more uses of id nodes */
1782                 set_id(env, nodenr, newnode);
1783         }
1784
1785         DEL_ARR_F(preds);
1786
1787         return ret;
1788 }
1789
1790 static int parse_modes(io_env_t *env)
1791 {
1792         EXPECT('{');
1793
1794         while (true) {
1795                 keyword_t kwkind;
1796
1797                 skip_ws(env);
1798                 if (env->c == '}') {
1799                         read_c(env);
1800                         break;
1801                 }
1802
1803                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1804                 switch (kwkind) {
1805                 case kw_mode: {
1806                         const char *name = read_string(env);
1807                         ir_mode_sort sort = (ir_mode_sort)read_enum(env, tt_mode_sort);
1808                         int size = read_long(env);
1809                         int sign = read_long(env);
1810                         ir_mode_arithmetic arith = read_mode_arithmetic(env);
1811                         unsigned modulo_shift = read_long(env);
1812                         int vector_elems = read_long(env);
1813                         ir_mode *mode;
1814
1815                         if (vector_elems != 1) {
1816                                 panic("no support for import of vector modes yes");
1817                         }
1818
1819                         mode = new_ir_mode(name, sort, size, sign, arith, modulo_shift);
1820                         if (mode_is_reference(mode)) {
1821                                 set_reference_mode_signed_eq(mode, read_mode(env));
1822                                 set_reference_mode_unsigned_eq(mode, read_mode(env));
1823                         }
1824                         break;
1825                 }
1826
1827                 default:
1828                         skip_to(env, '\n');
1829                         break;
1830                 }
1831         }
1832         return 1;
1833 }
1834
1835 static int parse_program(io_env_t *env)
1836 {
1837         EXPECT('{');
1838
1839         while (true) {
1840                 keyword_t kwkind;
1841
1842                 skip_ws(env);
1843                 if (env->c == '}') {
1844                         read_c(env);
1845                         break;
1846                 }
1847
1848                 kwkind = (keyword_t) read_enum(env, tt_keyword);
1849                 switch (kwkind) {
1850                 case kw_segment_type: {
1851                         ir_segment_t  segment = (ir_segment_t) read_enum(env, tt_segment);
1852                         ir_type      *type    = read_type(env);
1853                         set_segment_type(segment, type);
1854                         break;
1855                 }
1856                 default:
1857                         parse_error(env, "unexpected keyword %d\n", kwkind);
1858                         skip_to(env, '\n');
1859                 }
1860         }
1861         return 1;
1862 }
1863
1864 void ir_import(const char *filename)
1865 {
1866         FILE *file = fopen(filename, "rt");
1867         if (file == NULL) {
1868                 perror(filename);
1869                 exit(1);
1870         }
1871
1872         ir_import_file(file, filename);
1873
1874         fclose(file);
1875 }
1876
1877 void ir_import_file(FILE *input, const char *inputname)
1878 {
1879         int oldoptimize = get_optimize();
1880         firm_verification_t oldver = get_node_verification_mode();
1881         io_env_t ioenv;
1882         io_env_t *env = &ioenv;
1883         size_t i, n;
1884
1885         symtbl_init();
1886
1887         memset(env, 0, sizeof(*env));
1888         obstack_init(&env->obst);
1889         env->idset      = new_set(id_cmp, 128);
1890         env->fixedtypes = NEW_ARR_F(ir_type *, 0);
1891         env->inputname  = inputname;
1892         env->file       = input;
1893         env->line       = 1;
1894
1895         /* read first character */
1896         read_c(env);
1897
1898         set_optimize(0);
1899         do_node_verification(FIRM_VERIFICATION_OFF);
1900
1901         while (true) {
1902                 keyword_t kw;
1903
1904                 skip_ws(env);
1905                 if (env->c == EOF)
1906                         break;
1907
1908                 kw = (keyword_t)read_enum(env, tt_keyword);
1909                 switch (kw) {
1910                 case kw_modes:
1911                         if (!parse_modes(env)) goto end;
1912                         break;
1913
1914                 case kw_typegraph:
1915                         if (!parse_typegraph(env)) goto end;
1916                         break;
1917
1918                 case kw_irg:
1919                 {
1920                         ir_entity *irgent = get_entity(env, read_long(env));
1921                         long valuetypeid;
1922                         ir_graph *irg = new_ir_graph(irgent, 0);
1923                         set_irg_frame_type(irg, get_type(env, read_long(env)));
1924                         valuetypeid = read_long(env);
1925                         if (valuetypeid != -1)
1926                                 set_method_value_param_type(get_entity_type(irgent),
1927                                                 get_type(env, valuetypeid));
1928
1929                         if (!parse_graph(env, irg)) goto end;
1930                         break;
1931                 }
1932
1933                 case kw_constirg: {
1934                         ir_graph *constirg = get_const_code_irg();
1935                         long bodyblockid = read_long(env);
1936                         set_id(env, bodyblockid, constirg->current_block);
1937                         if (!parse_graph(env, constirg)) goto end;
1938                         break;
1939                 }
1940
1941                 case kw_program:
1942                         parse_program(env);
1943                         break;
1944
1945                 default: {
1946                         parse_error(env, "Unexpected keyword %d at toplevel\n", kw);
1947                         exit(1);
1948                 }
1949                 }
1950         }
1951
1952 end:
1953         n = ARR_LEN(env->fixedtypes);
1954         for (i = 0; i < n; i++)
1955                 set_type_state(env->fixedtypes[i], layout_fixed);
1956
1957         DEL_ARR_F(env->fixedtypes);
1958
1959         del_set(env->idset);
1960
1961         irp_finalize_cons();
1962
1963         do_node_verification(oldver);
1964         set_optimize(oldoptimize);
1965
1966         obstack_free(&env->obst, NULL);
1967 }